Test your knowledge of light bulbs: how they work, their key components, the science of incandescence, and the role of ...

More than a century after their invention, tungsten filaments—the coiled metal wires at the heart of many incandescent light bulbs—continue to be popular. This is despite the growing market ...

Tungsten-filament bulbs — the most widely used light source in the world — burn hands if unscrewed while lit. The bulbs are infamous for generating more heat than light. Now a microscopic ...

While halogen bulbs, like incandescent, contain a filament made of the metal tungsten, they are, in this case, encased in a quartz envelope (as glass would melt from the heat); the gas inside is ...

As inventors in the early 1900s vied to devise the best incandescent lightbulb, tungsten won out over carbon for making filaments. Today, however, there’s a form of carbon that was unknown back ...

Hit up the lighting aisle of any big box hardware store these days and you’ll probably find a variety of Edison bulbs — modern bulbs meant to evoke the bare, complicated tungsten filament ...

Finally they replaced the tungsten filament in an ordinary 40-watt light bulb with the nanotube filaments and sealed the bulb under vacuum (figure 1). The team found that the nanotube filaments emit ...

PHOENIX -- Saying they were striking a blow for individual rights, a Senate panel voted Tuesday to keep old-fashioned tungsten-filament light bulbs legal in Arizona long after they're banned by ...